window.onload=function (){
    $("#categorychecklist :checkbox").change(function() { 
        if($(this).attr("checked")){
            $(this).parents("li").each(function(){        
                $(this).children(".selectit").find(":checkbox").attr("checked","checked");
            })
        }else{
            $(this).parents("li").each(function(){        
                $(this).children(".selectit").find(":checkbox").attr("checked","");
            })
        }
       // $("#in-category-490").attr("checked","checked");   
        });
    
    
}